nsz Git - libfirm/blob - ir/lpp/mps.c

   1 /**
   2  * Author:      Daniel Grund
   3  * Date:        02.06.2005
   4  * Copyright:   (c) Universitaet Karlsruhe
   5  * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
   6  */
   7 #include "config.h"
   8 #include <stdarg.h>
   9 #include <assert.h>
  10 #include "mps.h"
  11
  12 /**
  13  * These must comply to the enum cst_t in lpp.h
  14  */
  15 static const char *mps_cst_encoding[4] = {"N", "E", "L", "G"};
  16
  17 /**
  18  * Diffferent line styles which can be used in a mps file
  19  */
  20 typedef enum _mps_line_t {l_raw,
  21                                                   l_ind_name, l_ind_objs, l_ind_rows, l_ind_cols, l_ind_rhs, l_ind_end,
  22                                                   l_data_row, l_data_col1, l_data_col2, l_data_mst, l_marker} mps_line_t;
  23
  24 static void mps_write_line(FILE *out, style_t style, mps_line_t line_type, ...) {
  25         va_list args;
  26         const char *fmt = "";
  27
  28         assert(style == s_mps_fixed || style == s_mps_free);
  29         va_start(args, line_type);
  30
  31         if (style == s_mps_fixed) {
  32                 /* white spaces are important! */
  33                 switch (line_type) {
  34                         case l_raw:       fmt = "%s\n"; break;
  35                         case l_ind_name:  fmt = "NAME          %s\n"; break;
  36                         case l_ind_objs:  fmt = "OBJSENSE\n"; break;
  37                         case l_ind_rows:  fmt = "ROWS\n"; break;
  38                         case l_ind_cols:  fmt = "COLUMNS\n"; break;
  39                         case l_ind_rhs:   fmt = "RHS\n"; break;
  40                         case l_ind_end:   fmt = "ENDATA\n"; break;
  41                         case l_data_row:  fmt = " %-2s %-8s\n"; break; /* Field 1-2 */
  42                         case l_data_col1: fmt = "    %-8s  %-8s  %12g\n"; break; /* Field 2-4 */
  43                         case l_data_col2: fmt = "    %-8s  %-8s  %12g   %-8s  %12g\n"; break; /* Field 2-6 */
  44                         case l_data_mst:  fmt = "    %-8s            %12g\n"; break; /* Field 3-4 */
  45                         case l_marker:    fmt = "    M%-7d  'MARKER'                 '%s'\n"; break; /* Field 2,3,5 */
  46                         default: assert(0);
  47                 }
  48         } else {
  49                 switch (line_type) {
  50                         case l_raw:       fmt = "%s\n"; break;
  51                         case l_ind_name:  fmt = "NAME %s\n"; break;
  52                         case l_ind_objs:  fmt = "OBJSENSE\n"; break;
  53                         case l_ind_rows:  fmt = "ROWS\n"; break;
  54                         case l_ind_cols:  fmt = "COLUMNS\n"; break;
  55                         case l_ind_rhs:   fmt = "RHS\n"; break;
  56                         case l_ind_end:   fmt = "ENDATA\n"; break;
  57                         case l_data_row:  fmt = " %s\t%s\n"; break;
  58                         case l_data_col1: fmt = " %s\t%s\t%g\n"; break;
  59                         case l_data_col2: fmt = " %s\t%s\t%g\t%s\t%g\n"; break;
  60                         case l_data_mst:  fmt = " %s\t%g\n"; break;
  61                         case l_marker:    fmt = " M%d\t'MARKER'\t'%s'\n"; break;
  62                         default: assert(0);
  63                 }
  64         }
  65
  66         vfprintf(out, fmt, args);
  67         va_end(args);
  68 }
  69
  70 static int mps_insert_markers(FILE *out, style_t style, lpp_var_t curr, lpp_var_t last, int marker_nr)
  71 {
  72         assert(style == s_mps_fixed || style == s_mps_free);
  73         if (last != curr) {
  74                 /* print end-marker for last */
  75                 if (last == lpp_binary)
  76                         mps_write_line(out, style, l_marker, marker_nr++, "INTEND");
  77
  78                 /* print begin-marker for curr */
  79                 if (curr == lpp_binary)
  80                         mps_write_line(out, style, l_marker, marker_nr++, "INTORG");
  81         }
  82         return marker_nr;
  83 }
  84
  85 void mps_write_mps(lpp_t *lpp, style_t style, FILE *out)
  86 {
  87         int i, count, marker_nr = 0;
  88         const lpp_name_t *curr;
  89         const matrix_elem_t *elem, *before = NULL;
  90         lpp_var_t last_type;
  91         assert(style == s_mps_fixed || style == s_mps_free);
  92
  93         /* NAME */
  94         mps_write_line(out, style, l_ind_name, lpp->name);
  95
  96         /* OBJSENSE */
  97         if (lpp->opt_type == lpp_maximize) {
  98                 mps_write_line(out, style, l_ind_objs);
  99                 mps_write_line(out, style, l_raw, " MAX");
 100         }
 101
 102         /* ROWS */
 103         mps_write_line(out, style, l_ind_rows);
 104         for(i=0; i<lpp->cst_next; ++i) {
 105                 curr = lpp->csts[i];
 106                 mps_write_line(out, style, l_data_row, mps_cst_encoding[curr->type.cst_type], curr->name);
 107         }
 108
 109         /* COLUMNS */
 110         mps_write_line(out, style, l_ind_cols);
 111         last_type = lpp_invalid;
 112         for(i=1; i<lpp->var_next; ++i) { /* column 0 is rhs */
 113                 curr = lpp->vars[i];
 114
 115                 /* markers */
 116                 marker_nr = mps_insert_markers(out, style, curr->type.var_type, last_type, marker_nr);
 117                 last_type = curr->type.var_type;
 118
 119                 /* participation in constraints */
 120                 count = 0;
 121                 matrix_foreach_in_col(lpp->m, curr->nr, elem) {
 122                         if (count == 0) {
 123                                 before = elem;
 124                                 count = 1;
 125                         } else {
 126                                 mps_write_line(out, style, l_data_col2, curr->name, lpp->csts[before->row]->name, (double)before->val, lpp->csts[elem->row]->name, (double)elem->val);
 127                                 count = 0;
 128                         }
 129                 }
 130                 if (count == 1)
 131                         mps_write_line(out, style, l_data_col1, curr->name, lpp->csts[before->row]->name, (double)before->val);
 132         }
 133         mps_insert_markers(out, style, lpp_invalid, last_type, marker_nr); /* potential end-marker */
 134
 135         /* RHS */
 136         mps_write_line(out, style, l_ind_rhs);
 137         count = 0;
 138         matrix_foreach_in_col(lpp->m, 0, elem) {
 139                 if (count == 0) {
 140                         before = elem;
 141                         count = 1;
 142                 } else {
 143                         mps_write_line(out, style, l_data_col2, "rhs", lpp->csts[before->row]->name, (double)before->val, lpp->csts[elem->row]->name, (double)elem->val);
 144                         count = 0;
 145                 }
 146         }
 147         if (count == 1)
 148                 mps_write_line(out, style, l_data_col1, "rhs", lpp->csts[before->row]->name, (double)before->val);
 149
 150         /* ENDATA */
 151         mps_write_line(out, style, l_ind_end);
 152 }
 153
 154 void mps_write_mst(lpp_t *lpp, style_t style, FILE *out)
 155 {
 156         int i;
 157         mps_write_line(out, style, l_ind_name, "");
 158         for (i=0; i<lpp->var_next; ++i) {
 159                 const lpp_name_t *var = lpp->vars[i];
 160                 if (var->value_kind == lpp_value_start)
 161                         mps_write_line(out, style, l_data_mst, var->name, (double)var->value);
 162         }
 163         mps_write_line(out, style, l_ind_end);
 164 }